20 Mar
1998
20 Mar
'98
5:34 p.m.
I was just aquired two PS/2 model 50s. Normally I don't collect older
PC system but they are interesting.
19 Mar
19 Mar
6:57 p.m.
On 20 Mar 98 at 23:34, Allison J Parent wrote:
I was just aquired two PS/2 model 50s. Normally I
don't collect older
PC system but they are interesting.
From Peter Wendt the PS/2 guru :
[" These "Integrated Harddisks" you most likely meant were used in Mod.
50,
55, 70 and P70. These are ESDI-drives with a combined electronic board
underneath, which is in fact a full MCA-adapter. The device has a Card-ID DF9F.
In IBM-technoslovakian this thing is called "DBA Harddrive", where DBA stands
for "Direct Bus Attachment". Size are 30,40,60,80,120 and 160MB. A 200MB was
available from Conner for some time but not as original part or OEM from IBM.
Very friendly greetings from Peter in Germany
http://members.aol.com/phwimage1/mcaindex.htm
"Master Of Desaster" - PS/2 expert since 1987 (Sigh !) " ]
You could also check out the PS/2 FAQ at ComputerCraft. I don't have their
URL handy . If you have any problem finding it , I'll dig it up.
ciao larry
lwalkerN0spaM(a)interlog.com
From opening them they are MCA bus with 286, 1mb
ram, 20mb? HD and 1.44
floppy. They are complete with reference disk(utilities?).
I didn't get
a keyboard, mouse or monitor with them but they look like typical VGA and
IBM miniplug nominal stuff. They are said to be working and look pretty
clean.
Questions, how fast were the 286s?
The hard disk is rather strange with what looks like a 50pin edge
connector. Obviously some of the extra connections over normal are
power. is the drive MFM, IDE or what?
What other oddities about these?
Allison
20 Mar
20 Mar
5:56 p.m.
I was just aquired two PS/2 model 50s. Normally I
don't collect older
PC system but they are interesting.
From opening them they are MCA bus with 286, 1mb ram, 20mb? HD and 1.44
floppy. They are complete with reference disk(utilities?). I didn't get
a keyboard, mouse or monitor with them but they look like typical VGA and
IBM miniplug nominal stuff. They are said to be working and look pretty
clean.
KB and monitor are normal, like you thought.
Questions, how fast were the 286s?
10mhz. If they are 50's, they are 1 wait state, 50Z's are 0 wait state.
<<<John>>>
6:38 p.m.
On Fri, 20 Mar 1998, Allison J Parent wrote:
The hard disk is rather strange with what looks like a
50pin edge
connector. Obviously some of the extra connections over normal are
power. is the drive MFM, IDE or what?
My first guess would be ESDI. Get the drive model num and look it up on
IBM Canada's web site (www.canada.ibm.com) (the Canada site has more
legacy info).
Adam
----------
Adam Fritzler
afritz(a)iname.com
http://www.afritz.base.org
----------
7:07 p.m.
From opening
them they are MCA bus with 286, 1mb ram, 20mb? HD and 1.44
floppy. They are
complete with reference disk(utilities?). I didn't get
a keyboard, mouse or monitor with them but they look like typical VGA and
IBM miniplug nominal stuff. They are said to be working and look pretty
clean. Questions, how fast were the 286s?
Let me
think... The 286 chip was available in 10MHz and 12MHz IIRC, maybe
another speed too. I can't remember which speed the 50/50Z was.
The hard disk is rather strange with what looks like a
50pin edge
connector. Obviously some of the extra connections over normal are
power. is the drive MFM, IDE or what?
Depends. My 50Z has an ESDI drive(and IIRC
they shipped with that, too),
but any PS/2 drive with that connetor should work. What it is is that IBM
added an HD controller to the HD's main board, so that connector is an MCA
interface.
What other oddities about these?
Don't you
love the way the case comes apart, and that little tool
underneath the speaker to help take the rest of it apart? Defintley my
favorite part of the Model 50. I have three 50Z's, one working and two with
no FD/HD/RAM. I'm thinking of using one as a terminal or something, putting
in an ethernet card with a boot ROM or something wierd like that. The other
I'll probably use as a regular PC if I find some free or cheap PS/2 parts.
All three of the 50Z's were free, my 80 was $50, and the 55sx was free. My
30-286 will be gone soon, as I sold it for $10...
--------------------------------------------------------------
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3 p.m.
New subject: oddball find PS/2-50, NOT oddball PS/2. :))
Guys, everyone should have this book by Scott Mueller, "Upgrading and
Repairing PCs". Tis' have good INFO on most PS/2, PS/1 and some late
IBM boxens including the PC, XT and AT in all types, convertible,
5155 portable.
Cool... At least you got the reference disk. Keep it around! You will need
it if the battery dies or if you change the configuration. You can also
download reference disks from one of IBM's FTP sites, I forget which. Go
check out comp.sys.ibm.ps2.hardware and it's FAQ.
Nooooo.. Only 10mhz. 50 is 1 wait state (slow) yuk. 50Z is 0ws
(yay and fully maxed out design for performance and MUST use 85ns
or faster simm, (I successfully used 70ns standard parity SIMM on
it and it's 72pin BTW). Way faster than that old AT box and
I think you should consider getting MCA scsi card and move that 486
adapter of yours over to that 50Z. :)) With ram adaper, 16550A
adapter, it would be very nice box. You can use standard generic
keyboard with ps/2 adapter and ps/2 generic mouse on them.
Not in this sense. Correctly stated, in IBM's words: for this 50
series uses either MFM/RLL card that plugs into that MCA bus or the
IDE MCA hd and pass thru card called IDE (MCA IDE) on Interposer
Card.
:-P
I used that model 30-286 in learning basic AutoCad in highschool
roughly 89's
BTW, got a spare working 1.44 FDD for that 50 series? All I have is
this battle damaged naked 50Z board with CPU and rom with stand up
floppy adaper. Or better yet, any luck finding a spare PS/2 with
386 or better boxen?
Oh, Allison, you might be much in ahead and investigate this www site
for motherboard upgrade for that one of your box:
http://www.neointeractive.com/
Jason D.
From opening them they are MCA bus with 286, 1mb ram,
20mb? HD and 1.44
floppy. They are complete with reference disk(utilities?). I
didn't get
a keyboard, mouse or monitor with them but they look like typical VGA and
IBM miniplug nominal stuff. They are said to be working and look pretty
clean. Questions, how fast were the 286s?
Let me
think... The 286 chip was available in 10MHz and 12MHz IIRC, maybe
another speed too. I can't remember which speed the 50/50Z was. The hard disk is rather strange with what looks
like a 50pin edge
connector. Obviously some of the extra connections over normal are
power. is the drive MFM, IDE or what?
Depends. My 50Z has an ESDI drive(and IIRC
they shipped with that, too),
but any PS/2 drive with that connetor should work. What it is is that IBM
added an HD controller to the HD's main board, so that connector is an MCA
interface. What other oddities about these?
Don't
you love the way the case comes apart, and that little tool
underneath the speaker to help take the rest of it apart? Defintley my
favorite part of the Model 50. I have three 50Z's, one working and two with
no FD/HD/RAM. I'm thinking of using one as a terminal or something, putting
in an ethernet card with a boot ROM or something wierd like that. The other
I'll probably use as a regular PC if I find some free or cheap PS/2 parts.
All three of the 50Z's were free, my 80 was $50, and the 55sx was free. My
30-286 will be gone soon, as I sold it for $10...
--------------------------------------------------------------
| http://members.tripod.com/~jrollins/index.html - Computers |
| http://www.geocities.com/Area51/Lair/1681/ - Star Trek |
| orham(a)qth.net list admin call sign coming soon... |
--------------------------------------------------------------
email: jpero(a)cgo.wave.ca
Pero, Jason D.
21 Mar
21 Mar
6:17 a.m.
John Rollins wrote:
Cool... At least you got the reference disk. Keep it around! You will need
it if the battery dies or if you change the configuration. You can also
download reference disks from one of IBM's FTP sites, I forget which. Go
check out comp.sys.ibm.ps2.hardware and it's FAQ.
Reference disks (setup disk images) are available at Windrivers.Com as well
(http://www.windrivers.com/) and at the PS/2 Page at
http://members.tripod.com/~ps2page/ and a few merchants that sell new and used PS/2
and PS/1 items. The IBM site for these is at ftp://ftp.pc.ibm.com/pub/
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 / Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
From opening them they are MCA bus with 286, 1mb ram,
20mb? HD and 1.44
floppy. They are complete with reference disk(utilities?). I
didn't get
a keyboard, mouse or monitor with them but they look like typical VGA and
IBM miniplug nominal stuff. They are said to be working and look pretty
clean. 
5:20 a.m.
Allison J Parent wrote:
Questions, how fast were the 286s?
As I recall, they were 8 MHz machines.
The hard disk is rather strange with what looks like a
50pin edge
connector. Obviously some of the extra connections over normal are
power. is the drive MFM, IDE or what?
The IBM HDs I have like you describe are ESDI drives. While I don't have
the numbers available, the ones I have are 60 MB.
What other oddities about these?
You probably already know the machines are worthless if the setup gets
changed/corrupted and the reference disk is not available to correct the
situation.
5:41 a.m.
At 08:20 AM 3/21/98 -0800, you wrote:
Allison J Parent wrote:
[snip]
You probably already know the machines are worthless if
the setup gets
changed/corrupted and the reference disk is not available to correct the
situation.
The Family One, PS/1, PS/2, etc. Ref disks are available at:
ftp://ftp.pc.ibm.com/pub/pcbbs/
Grab ALLFILES.TXT for a (poorly organized) listing.
You need LOADDSKF.EXE (dual bound exe for DOS and OS/2) to create some of
the images, others are done with Sydex utils and are self-extracting images.
--
David Wollmann |
dwollmann(a)ibmhelp.com | Support for legacy IBM products.
DST ibmhelp.com Technical Support | Data, document and file conversion for
IBM http://www.ibmhelp.com/ | legacy file and media formats.
5:58 a.m.
Allison J Parent wrote:
I was just aquired two PS/2 model 50s. Normally I
don't collect older
PC system but they are interesting.
Older? Most were made around 1990-94 and I sell tons of them to this day.
Most is proprietary though.
A good source of info, specs and links for the PS/2's is
http://members.tripod.com/~ps2page/
I have tons of parts for various models from the 25 to 95 and portables in
case you ever need any. The 50's and above are the microchannel machines with
those below 50 being ISA. The monitor is VGA, the keyboard and mouse are
stock PS/2 type. When I buy machines in quantity they never come with the
monitor, KB or mouse. The hard drives vary. While it is a proprietary
connector, there are ESDI, SCSI and IDE type drives with that flat (no
separate) power connector card edge and ribbon.
Look at http://www.surplusdirect.com/ this week, they had charcoal colored
new PS/2 style keyboards for $3.00 each and charcoal mice for $3.88 each. No
minimum either, buy once you reach a certain point they drop the UPS ground
to a flat $7.00 for the total shipment.
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 / Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
9621
days inactive
9622
days old
9 comments
9 participants
participants (9)
-
afritz＠iname.com -
allisonp＠world.std.com -
dwollmann＠ibmhelp.com -
jpero＠cgo.wave.ca -
jruschme＠exit109.com -
lwalker＠mail.interlog.com -
marvin＠rain.org -
rexstout＠ptld.uswest.net -
rhblake＠bbtel.com